Technical design considerations are reviewed in detail in the context of meeting specific, user required performance criteria for large area, high density liquid crystal displays. Physical screen size, pixel density, total screen content, optical characteristics and price are discussed. Optical performance of the display, as well as electrical performance of the thin film transistors are given. Off current, on current, switching speed, time constants, and angular dependence of contrast are discussed. Yield is considered in relation to detailed device structure and processing details. The impact of total pixel count, screen size, number of processing steps, processing criticality, defect density, and minimum feature size are examined. High yielding, high performance devices are being manufactured and sold. Only standard production equipment, standard materials and standard processing are used to manufacture these devices.